Pickling apparatus



y 1932- w. J. BRADDOCK ET AL. 858,431

PICKLING APPARATUS Filed Oct. 24, 1951 2 Sheets-Sheet 1 l-' -I I-' INVENTOR wad-m mad 4M 2 M 2%! wglwwwmm il 1932. w. BRADDOCK ET AL 1,858,431

PICKLING APPARATUS 2 Shets-Sheet 2 Filed Oct. 24, 1931 IVIIIIIIILL mIWN Aln Patented May 17, 1932 V UNITED STATES.

PATENT OFFICE WILLIAM J. BRADDOGK AND OI-IARIZJES W. HALL ER, .OF VIHEELING, WEST VIRGINIA, ASSIGNOBS T WHEELING BRONZE CASTING COMPANY, A CORPORATION OF WEST VIRGINIA PICKLING APPARATUS Application filed October 24, 1931. Serial No. 570,823.

This invention relates to a pickling crate.

One object of the invention is to so construct the lower frame of a pickling crate that the loosening of frame members and of partition posts, due to the corrosive effect of a pickling bath, is avoided.

Another object of the invention is to avoid the corrosive action of the pickling bath on the lifting bars of the crate inthe region of the bath level where such corrosive action is greatest, due to movement of the pickling crate through the bath during the operation of pickling.

In the accompanying drawings Figure I is a plan view of the pickling crate; Figure II is an end elevation thereof; Figure III is an elevation of a sill and post unit constituting an element of the crate; Figure IV is a fragmentary isometric view, to larger scale, through aportion of the lower structure of the pickling crate; Figure V is a cross sectional detailed view, to larger scale, illustrating the method of attachment of the longitudinal sills of the crate to the transverse sills thereof; and Figure VI is a horizontal sectional view taken on the line VIVI of Figure V.

We have found from experience that the corrosive action of apickling bath tends to loosen all the parts of a sheet pickling crate by entering into the joints between parts and destroying the close fit therebetween. This is particularly disadvantageous in connection with the upright posts which form partitions for supporting the sheets or plates in edgewise position in the crate. Even if these posts be threaded into their supporting sills, in the course of time acid will inevitably enter to dissolve some metal of the threaded connection and loosen the posts in their sockets. While peened connections between the various parts of a sheet pickling crate are highly desirable, as avoiding dependenceon a close fit between parts, even such connections will be gradually loosened by the corrosive action of the bath.

We have therefore invented a complete pickling crate in which the parts are so interconnected as to wholly eliminate contacting surfaces between which the bath liquid may enter to dissolve metal and loosen the connections. y

We have also observed that the lifting bars of a pickling crate corrode with particular rapidity in the region at which the upper level of the pickling bath normally lies. This is because the eifect of the bath is most marked at its surface and is intensified'by movementof the pickling crate in the bath which produces a swishing action of the bath and a marked cutting effect on the lifting bars. lVe therefore cover the portions of our lifting bars which lie upwardly of the partition posts and the sheets carried by the crate with a sleeve of material substantially unaffected by the bath.

In the accompanying drawings reference numeral '1 designates the longitudinal sills of the pickling crate, each of which has cast integrally therewith a. plurality of partition posts 2. It will. be clear that because of this integral casting of sill 1 and posts 2 there is no possibility for the action of the bath to loosen the posts in the sills. They therefore remain firmly fixed inposition in spite of the corrosive effect of the bath.

We have further provided connection between the longitudinal sills carrying the partitionposts and the end sills 8 of the crate, such that the connection'between the longitudinal and end sills cannot be loosened by the action of the bath. This we effect by-forming a cast joint around the region ofcontact between the longitudinal sills 1 and the end sills3.' Q

In making the cast joint a. longitudinal sill is caused to abut the edge of one of the end sills 3, the abutt'ed region of end sill 3 lying within a mold 4 and the longitudinal sill 1 extending through a notch Bin a wall of the mold. It will be noted by reference to Figures III, V, and VI that each of the sills 1 is terminally flanged at 6 to provide a seat for-mutually bonding the sills. Mold 4 has a lid 7, whichin use forms an upward continuation of the mold cavity and is provided with a pouring aperture 8 adjacent theouter wall of the mol With the-sills and. mold positioned as shown in Figures V and VI, a metal identical with or similar to that of which the sills are composed is poured through aperture 8 to enter the mold and substantially fill the cavity Within the body and lid thereof. On cooling, this metal shrinks, freeing it from the mold and leaving a block 9- of metal firmly engaging the end sill 3 to longitudinal sill 1 by its shrinkage.

Each of the lifting bars 10is similarly engaged by a cast joint 11 to one of the end sills 3. Desirably the mutual engagement of the end sills and the lifting posts is effected prior to the attachment of the longitudinal sills 1. At or adjacent its upper end each of the lifting bars 10 is also similarly connected with a yoke 12.

It will be noted that the upper wall of the mold lid 7 is provided with an aperture 13.

In the terminal regions of the end sills 3 short guard posts 14 for carrying guard rails 15 are attached to the endposts. This attachment is generally similar to that by means of which longitudinal sills l are attached to the end sills 3. For this casting operation, a guard post 14 is caused to extend through the opening13 in the lid member 7 of the mold with its lower region abutting the end sill 3. The operation of casting a block 9 of metal around the contact region of the guard post and end sill therefore serves to similarly secure the guard post in position. Similarly short posts '16, carrying horizontal side bars 17, are cast to the end sills 3 by inserting each of them in a hole 13 of one of the mold covers. Having thus formed a jointless pickling crate We cover the portion of each of the lifting bars 10 which lies upwardly of partition posts 2 with a sleeve of material highly resistant to corrosion. This sleeve 18 may be of lead, cast or burned. to this region of the lifting bars. It may, however, be of rubber ora suitable composition, if so desired.

\Ve claim as our invention:

to the plane of the frame sills and end sills, and connection between the structural elements comprising blocks of metal cast around and shrunk to mutually adjacent regions of the various structural elements to provide a complete and jointless pickling crate.

4. A pickling crate comprising as primary structural elements a plurality of frame sills, end sills extending transversely of the frame sills, lifting posts disposed substantially perpendicular to the plane of the frame sills and end sills, and connection between the primary structural elements comprising blocks of metal cast around and shrunk to mutually adjacent regions of the various structural elements to provide a connected jointless structure.

5. A pickling crate comprising a plurality of frame sills, end sills extending transversely of the frame sills, the frame sills terminally abutting the end sills at both ends of the frame sills and deformed at the region of abutment, and connection between the frame sills and end sills comprising blocks of metal cast around and'shrunk to both at the region of abutment between the sills to provide a connected j ointless structure.

In testimony whereof we have hereunto set our hands.

WILLIAM J. BRADDOCK. CHARLES W. HALLER.

1..A pickling crate comprising a plurality v of frame sills comprising upwardly projecting partition posts cast integral with the body of each sill, end sills extending transversely ofthe frame sills, and connection between the frame sills and the end sills comprising a block of metal cast around and shrunk to the mutually adjacent regions of the frame sills and the end sills.

2. A sill structure for use as a structural element in a pickling crate comprising a metallic sill proper, and a plurality of posts .cast integral with the sill proper and disposed substantially perpendicular to the 7 

